D.C. climate guide

Temperature in D.C. (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
5°C maximum daytime temperature in January in D.C. (Washington)5
7°C maximum daytime temperature in February in D.C. (Washington)7
13°C maximum daytime temperature in March in D.C. (Washington)13
19°C maximum daytime temperature in April in D.C. (Washington)19
24°C maximum daytime temperature in May in D.C. (Washington)24
29°C maximum daytime temperature in June in D.C. (Washington)29
31°C maximum daytime temperature in July in D.C. (Washington)31
30°C maximum daytime temperature in August in D.C. (Washington)30
26°C maximum daytime temperature in September in D.C. (Washington)26
20°C maximum daytime temperature in October in D.C. (Washington)20
14°C maximum daytime temperature in November in D.C. (Washington)14
8°C maximum daytime temperature in December in D.C. (Washington)8
Min temperature (night-time)
-4°C minimum night-time temperature in January in D.C. (Washington)-4
-3°C minimum night-time temperature in February in D.C. (Washington)-3
2°C minimum night-time temperature in March in D.C. (Washington)2
7°C minimum night-time temperature in April in D.C. (Washington)7
12°C minimum night-time temperature in May in D.C. (Washington)12
17°C minimum night-time temperature in June in D.C. (Washington)17
20°C minimum night-time temperature in July in D.C. (Washington)20
20°C minimum night-time temperature in August in D.C. (Washington)20
15°C minimum night-time temperature in September in D.C. (Washington)15
9°C minimum night-time temperature in October in D.C. (Washington)9
4°C minimum night-time temperature in November in D.C. (Washington)4
-1°C minimum night-time temperature in December in D.C. (Washington)-1

Sunshine & Daylight in D.C.

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
10 hours of daylight per day in January in D.C. (Washington)10
11 hours of daylight per day in February in D.C. (Washington)11
12 hours of daylight per day in March in D.C. (Washington)12
13 hours of daylight per day in April in D.C. (Washington)13
14 hours of daylight per day in May in D.C. (Washington)14
15 hours of daylight per day in June in D.C. (Washington)15
15 hours of daylight per day in July in D.C. (Washington)15
14 hours of daylight per day in August in D.C. (Washington)14
12 hours of daylight per day in September in D.C. (Washington)12
11 hours of daylight per day in October in D.C. (Washington)11
10 hours of daylight per day in November in D.C. (Washington)10
9 hours of daylight per day in December in D.C. (Washington)9

Rainfall in D.C.

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
10 days with some rainfall in January in D.C. (Washington)10
10 days with some rainfall in February in D.C. (Washington)10
10 days with some rainfall in March in D.C. (Washington)10
10 days with some rainfall in April in D.C. (Washington)10
11 days with some rainfall in May in D.C. (Washington)11
10 days with some rainfall in June in D.C. (Washington)10
10 days with some rainfall in July in D.C. (Washington)10
9 days with some rainfall in August in D.C. (Washington)9
7 days with some rainfall in September in D.C. (Washington)7
7 days with some rainfall in October in D.C. (Washington)7
9 days with some rainfall in November in D.C. (Washington)9
9 days with some rainfall in December in D.C. (Washington)9
Average monthly rainfall (mm)
71 mm monthly rainfall in January in D.C. (Washington)71
70 mm monthly rainfall in February in D.C. (Washington)70
85 mm monthly rainfall in March in D.C. (Washington)85
75 mm monthly rainfall in April in D.C. (Washington)75
96 mm monthly rainfall in May in D.C. (Washington)96
88 mm monthly rainfall in June in D.C. (Washington)88
99 mm monthly rainfall in July in D.C. (Washington)99
103 mm monthly rainfall in August in D.C. (Washington)103
87 mm monthly rainfall in September in D.C. (Washington)87
78 mm monthly rainfall in October in D.C. (Washington)78
83 mm monthly rainfall in November in D.C. (Washington)83
82 mm monthly rainfall in December in D.C. (Washington)82

More climate for D.C.

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (Maximum)
UV (maximum) index 2 (Low) in January in D.C. (Washington)2
UV (maximum) index 3 (Moderate) in February in D.C. (Washington)3
UV (maximum) index 5 (Moderate) in March in D.C. (Washington)5
UV (maximum) index 7 (High) in April in D.C. (Washington)7
UV (maximum) index 8 (Very High) in May in D.C. (Washington)8
UV (maximum) index 9 (Very High) in June in D.C. (Washington)9
UV (maximum) index 9 (Very High) in July in D.C. (Washington)9
UV (maximum) index 8 (Very High) in August in D.C. (Washington)8
UV (maximum) index 7 (High) in September in D.C. (Washington)7
UV (maximum) index 4 (Moderate) in October in D.C. (Washington)4
UV (maximum) index 3 (Moderate) in November in D.C. (Washington)3
UV (maximum) index 2 (Low) in December in D.C. (Washington)2
Heat & Humidity
No heat & humidity in January in D.C. (Washington)0
No heat & humidity in February in D.C. (Washington)0
No heat & humidity in March in D.C. (Washington)0
No heat & humidity in April in D.C. (Washington)0
No heat & humidity in May in D.C. (Washington)0
Moderate heat & humidity in June in D.C. (Washington)M
High heat & humidity in July in D.C. (Washington)H
High heat & humidity in August in D.C. (Washington)H
Low heat & humidity in September in D.C. (Washington)L
No heat & humidity in October in D.C. (Washington)0
No heat & humidity in November in D.C. (Washington)0
No heat & humidity in December in D.C. (Washington)0

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

The climate guide for D.C. shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

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